Snugly means fitting closely and comfortably, or being tucked in tightly and cozily. When your winter boots fit snugly, they hug your feet just right: not too loose, not too tight, but perfectly secure. A lid that closes snugly on a jar seals tightly without any gaps.

The word suggests both closeness and comfort working together. A baby wrapped snugly in a blanket feels warm and protected. When you tuck a book snugly into your backpack, it sits firmly in place and won't slide around. A snugly fitted puzzle piece clicks into its spot with satisfying precision.

You'll often hear snugly when something needs to be both tight and comfortable at once. Astronauts' spacesuits must fit snugly to work properly but still allow movement. A snugly tied knot holds firmly without cutting into the rope. The word captures that sweet spot where secure meets cozy, where nothing's too loose to work properly or too tight to feel good.